Out Of Memory errors detected on your server

[pbear]

Hello,

 

Today in the report of the plugin Fix Common Problems, I see:

* **Out Of Memory errors detected on your server**

 

Quote

Your server has run out of memory, and processes (potentially required) are being killed off. You should post your diagnostics and ask for assistance on the Unraid forums

 

So could you check why ? I join my diagnostic report file.

 

For now:

 

Yesterday evening, as we were watching a movie through Appletv4k (Plex) and the unraid server (Plex container), the Plex server suddently crashed. It came back by itself after ~1 minute. Maybe there is a link between both events.

 

Thank you,

 

unraid-diagnostics-20230813-1908.zip

Edited August 15, 2023 by pbear

[JorgeB]

If it's a one time thing you can ignore, if it keeps happening try limiting more the RAM for VMs and/or docker containers, the problem is usually not just about not enough RAM but more about fragmented RAM, alternatively a small swap file on disk might help, you can use the swapfile plugin:

 

https://forums.unraid.net/topic/109342-plugin-swapfile-for-691/

[pbear]

Ok, nothing special on the diagnostic file ? I'll update this thread if this happens again.

Edited August 15, 2023 by pbear

[pbear]

Hello,

 

I got the alert message again. **Out Of Memory errors detected on your server**

 

I have 4 VM running, using a total of 20G on the 64G available.

I have around 32 docker containers running, is it too much ?

 

I join the diagnostic file form today. Could it be analysed ?

 

Thanks,

unraid-diagnostics-20230820-0944.zip

[Michael_P]

3 hours ago, pbear said:

I have around 32 docker containers running, is it too much ?

 

You can limit them to a specific amount, for me Plex goes wonky during scheduled maintenance and gobbles up all the RAMs so I limit it to 4GB 

 

[pbear]

I see that the template already set a limit to 12G.

 

Isn't it another container that gobbles up all the RAM ? 

[Michael_P]

2 hours ago, pbear said:

I see that the template already set a limit to 12G.

 

Isn't it another container that gobbles up all the RAM ? 

 

Have you done what the release notes suggest?

 

https://docs.unraid.net/unraid-os/release-notes/6.12.3

 

If Docker containers have issues starting after a while, and you are running Plex, go to your Plex Docker container settings, switch to advanced view, and add this to the Extra Params: --no-healthcheck

 

[JorgeB]

On 8/20/2023 at 8:50 AM, pbear said:

I join the diagnostic file form today. Could it be analysed ?

It's not easy to see what exactly is causing the problem by looking at the diags, as mentioned in the first reply you can limit all your containers and VMs, if you don't want to limit them all try starting a few at a time to see if you can find the culprit, using the swapfile plugin may also help, most often is not a case of not enough RAM, just fragmented RAM.